pocket

app/hooks/useAnalyse.ts

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+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+
+import { getCurrentUserId, pb } from '@/services/pocketbase';
+import type { AnalyseFinanciereRecord, TypeBienFiscal } from '@/types/collections';
+import { roundMoney } from '@/utils/format';
+
+export type AnalyseFormInput = {
+  prix_achat?: number;
+  type_bien_fiscal?: TypeBienFiscal;
+  frais_notaire?: number;
+  frais_agence_achat?: number;
+  budget_travaux?: number;
+  reserve_imprevus_pct?: number;
+  duree_portage_mois?: number;
+  taux_credit?: number;
+  taxe_fonciere_annuelle?: number;
+  charges_copropriete_mensuelle?: number;
+  prix_revente_cible?: number;
+  frais_agence_vente_pct?: number;
+  taux_impot?: number;
+};
+
+export type AnalyseCalculated = {
+  frais_notaire: number;
+  travaux_total: number;
+  frais_portage_total: number;
+  prix_revient: number;
+  marge_brute: number;
+  marge_nette: number;
+  marge_brute_pct: number;
+  marge_nette_pct: number;
+  rendement_net_pct: number;
+};
+
+export function calculateResults(data: AnalyseFormInput): AnalyseCalculated {
+  const prixAchat = data.prix_achat ?? 0;
+  const typeFiscal = data.type_bien_fiscal ?? 'ancien';
+  const fraisNotaireAuto = prixAchat * (typeFiscal === 'neuf' ? 0.02 : 0.075);
+  const fraisNotaire = data.frais_notaire ?? fraisNotaireAuto;
+
+  const budgetTravaux = data.budget_travaux ?? 0;
+  const reservePct = data.reserve_imprevus_pct ?? 0;
+  const travauxTotal = budgetTravaux * (1 + reservePct / 100);
+
+  const tauxCredit = data.taux_credit ?? 0;
+  const taxeFon = data.taxe_fonciere_annuelle ?? 0;
+  const charges = data.charges_copropriete_mensuelle ?? 0;
+  const dureeMois = data.duree_portage_mois ?? 0;
+  const mensualiteCredit = (prixAchat * (tauxCredit / 100)) / 12;
+  const mensualiteFoncier = taxeFon / 12;
+  const fraisPortageTotal = (mensualiteCredit + mensualiteFoncier + charges) * dureeMois;
+
+  const fraisAgenceAchat = data.frais_agence_achat ?? 0;
+  const prixRevient = prixAchat + fraisNotaire + fraisAgenceAchat + travauxTotal + fraisPortageTotal;
+
+  const prixRevente = data.prix_revente_cible ?? 0;
+  const margeBrute = prixRevente - prixRevient;
+
+  const fraisAgenceVentePct = data.frais_agence_vente_pct ?? 0;
+  const tauxImpot = data.taux_impot ?? 0;
+  const fraisAgenceVente = prixRevente * (fraisAgenceVentePct / 100);
+  const impotSurMarge = margeBrute * (tauxImpot / 100);
+  const margeNette = margeBrute - fraisAgenceVente - impotSurMarge;
+
+  const margeBrutePct = prixRevient > 0 ? (margeBrute / prixRevient) * 100 : 0;
+  const margeNettePct = prixRevente > 0 ? (margeNette / prixRevente) * 100 : 0;
+  const rendementNetPct = prixRevient > 0 ? (margeNette / prixRevient) * 100 : 0;
+
+  return {
+    frais_notaire: roundMoney(fraisNotaire),
+    travaux_total: roundMoney(travauxTotal),
+    frais_portage_total: roundMoney(fraisPortageTotal),
+    prix_revient: roundMoney(prixRevient),
+    marge_brute: roundMoney(margeBrute),
+    marge_nette: roundMoney(margeNette),
+    marge_brute_pct: roundMoney(margeBrutePct),
+    marge_nette_pct: roundMoney(margeNettePct),
+    rendement_net_pct: roundMoney(rendementNetPct),
+  };
+}
+
+export function rendementColor(rendementNetPct: number): string {
+  if (rendementNetPct > 15) return '#16A34A';
+  if (rendementNetPct >= 8) return '#EA580C';
+  return '#DC2626';
+}
+
+function formToRecord(form: AnalyseFormInput, calc: AnalyseCalculated): Record<string, unknown> {
+  return {
+    prix_achat: form.prix_achat,
+    type_bien_fiscal: form.type_bien_fiscal,
+    frais_notaire: calc.frais_notaire,
+    frais_agence_achat: form.frais_agence_achat,
+    budget_travaux: form.budget_travaux,
+    reserve_imprevus_pct: form.reserve_imprevus_pct,
+    duree_portage_mois: form.duree_portage_mois,
+    taux_credit: form.taux_credit,
+    taxe_fonciere_annuelle: form.taxe_fonciere_annuelle,
+    charges_copropriete_mensuelle: form.charges_copropriete_mensuelle,
+    prix_revente_cible: form.prix_revente_cible,
+    frais_agence_vente_pct: form.frais_agence_vente_pct,
+    taux_impot: form.taux_impot,
+    marge_brute: calc.marge_brute,
+    marge_brute_pct: calc.marge_brute_pct,
+    marge_nette: calc.marge_nette,
+    marge_nette_pct: calc.marge_nette_pct,
+  };
+}
+
+export function useAnalyse(bienId: string | undefined) {
+  const uid = getCurrentUserId();
+  const queryClient = useQueryClient();
+
+  const query = useQuery({
+    queryKey: ['analyse_financiere', bienId, uid],
+    queryFn: async (): Promise<AnalyseFinanciereRecord | null> => {
+      if (!bienId || !uid) return null;
+      const res = await pb.collection('analyses_financieres').getList<AnalyseFinanciereRecord>(1, 1, {
+        filter: `bien="${bienId}" && user="${uid}"`,
+        sort: '-id',
+      });
+      return res.items[0] ?? null;
+    },
+    enabled: Boolean(bienId && uid),
+  });
+
+  const saveMutation = useMutation({
+    mutationFn: async (data: AnalyseFormInput & { notes?: string }) => {
+      if (!bienId || !uid) throw new Error('Données manquantes');
+      const res = await pb.collection('analyses_financieres').getList<AnalyseFinanciereRecord>(1, 1, {
+        filter: `bien="${bienId}" && user="${uid}"`,
+        sort: '-id',
+      });
+      const existing = res.items[0];
+      const calc = calculateResults(data);
+      const payload = {
+        ...formToRecord(data, calc),
+        notes: data.notes,
+      };
+      if (existing) {
+        return pb.collection('analyses_financieres').update<AnalyseFinanciereRecord>(existing.id, payload);
+      }
+      return pb.collection('analyses_financieres').create<AnalyseFinanciereRecord>({
+        user: uid,
+        bien: bienId,
+        ...payload,
+      });
+    },
+    onSuccess: () => {
+      void queryClient.invalidateQueries({ queryKey: ['analyse_financiere', bienId, uid] });
+      void queryClient.invalidateQueries({ queryKey: ['bien_detail', bienId] });
+      void queryClient.invalidateQueries({ queryKey: ['biens', uid] });
+    },
+  });
+
+  return {
+    analyse: query.data ?? null,
+    isLoading: query.isPending,
+    error: query.error,
+    refetch: query.refetch,
+    fetchAnalyse: query.refetch,
+    saveAnalyse: saveMutation.mutateAsync,
+    isSaving: saveMutation.isPending,
+    calculateResults,
+  };
+}